A telescopic arm sealing net spanning frame

Abstract

The invention discloses a telescopic-arm blocking crossing rack, and belongs to the technical field of power line engineering. The telescopic-arm blocking crossing rack comprises rack bodies and blocking devices, wherein the rack bodies are arranged at two sides of a crossed object, the blocking devices are connected to the rack bodies, each rack body comprises a vertical post, a rotation support seat, a mast and rack body fixing pull lines, the vertical posts are arranged at the two sides of the crossed object and are fixed by the rack body fixing pull lines, the rotation support seat is connected between the mast and the vertical post, each blocking device comprises a telescopic arm, a balancing arm and a blocking rod system, the telescopic arm and the balancing arm are respectively and symmetrically arranged at two sides of the rotation support seat, a blocking rod system is attached onto the telescopic arm, and the blocking devices at the two sides of the crossed object are abutted in the air by the telescopic arms. By the telescopic-arm blocking crossing rack, rapid blocking can be achieved in the air, the blocking power-failure running time is short, a bearing framework crossed by blocking is of a rigid structure and is high in stability, the crossed object can be protected very well, meanwhile, broken line impact can be borne, the crossed object is protected within the rigid framework, and the safety guarantee during circuit crossing is improved.

Description

technical field [0001] The invention relates to a network-sealing spanning frame with a telescopic arm, which belongs to the technical field of power line engineering. Background technique [0002] With the development of my country's power grid construction in recent decades, an ultra-high-voltage power grid system that runs north and south and connects east and west has been formed. With the construction of UHV transmission lines, the expansion of the power grid is relatively rapid. In the construction of power engineering lines, there are a large number of lines crossing and crossing. During the erection process, it is inevitable that they will cross and cross each other with facilities or lines such as power lines, communication lines, expressways or electrified railways. Therefore, in UHV power In the process of line construction, conductor traction and deployment is an important process. In actual construction, there are often conductors that need to cross other lines...

AI Technical Summary

Problems solved by technology

However, the erection of the rope-type spanning frame of the main cableway requires a long window time, and it is necessary to complete the deployment of the first-level traction rope and the main cableway rope within the time of power outage, which requires a long time for the cross-domain line to be out of service. Long-term interruptions caused by crossing facilities or lines, such as the interruption of a certain circuit, the interruption of a certain communication line, the interruption of a highway, etc., will bring great losses and adverse effects to social and economic development and the normal life of the people

At the same time, because the main load-bearing unit of its sealing network is mainly the cableway rope, its structure is essentially a flexible connection, and it is difficult to ensure stable use.

At the same time, it is difficult to withstand the impact load caused by the disconnection accident during use, and cannot guarantee the safety of the crossed object

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